A bird-watcher sees a small yellow bird in a tree. Explain to the bird-watcher how he can use a dichotomous key to identify the bird. Assume he does not know anything about dichotomous keys. Then, write two steps of a dichotomous key that would be helpful for the bird-watcher.(2 points)
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A dichotomous key is a tool used to identify living things based on their characteristics. It consists of a series of questions or choices that lead to the identification of the organism. To use a dichotomous key to identify the small yellow bird, the bird-watcher should follow the steps in the key, answering each question based on the bird's features until the bird is identified.
Two steps of a dichotomous key that would be helpful for the bird-watcher are:
Step 1: Does the bird have black markings on its wings or tail?
-If yes, go to step 2.
-If no, the bird is not a blackbird.
Step 2: Does the bird have a yellow belly or yellow throat?
-If the bird has a yellow belly, it is likely a yellow warbler.
-If the bird has a yellow throat, it is likely a Wilson's warbler.
-If the bird does not have a yellow belly or yellow throat, continue to the next step.